US3748607A - Flat type balanced armature relay - Google Patents

Flat type balanced armature relay Download PDF

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Publication number
US3748607A
US3748607A US00283732A US3748607DA US3748607A US 3748607 A US3748607 A US 3748607A US 00283732 A US00283732 A US 00283732A US 3748607D A US3748607D A US 3748607DA US 3748607 A US3748607 A US 3748607A
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US
United States
Prior art keywords
above mentioned
driving piece
header
spring
electromagnetic relay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00283732A
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English (en)
Inventor
T Mori
M Morimoto
H Nishimura
H Yoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Application granted granted Critical
Publication of US3748607A publication Critical patent/US3748607A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • H01H2050/044—Special measures to minimise the height of the relay

Definitions

  • Coil bobbin with exciting coil and yoke are placed in a pile on header plate of magnetic material and the yoke and header are coupled by a permanent magnet disposed at a side of the bobbin.
  • Rockable armature having at both ends contact spring driving pins is contained axially in the bobbin.
  • a frame member for fixing the pile and magnet to the header has an adjusting spring means for urging the driving pins to render the switching operation stable and disposed in a manner readily accessible from sideward for adjusting the urging pressure.
  • the relay may be adapted to be of one-stable, two-stable or center-stable type.
  • German Patent No. 1,213,917 For a balanced armature relay of this kind, there has been already suggested, for example, a German Patent No. 1,213,917.
  • the relay disclosed in this German patent is of a structure wherein an assembly held by two yokes from both sides of a coil containing an armature is fitted on a base plate having a lead terminal in the lower part,and has therefore a defect that the height of the relay is large.
  • the present invention is to eliminate this effect that the height of the relay is large, by mounting a coil bobbin containing an armature on a header forming a part of a magnetic circuit, mounting a yoke on this coil bobbin and arranging a permanent magnet on the side of the coil bobbin and is further to obtain a relay making a stable operation by pressing a driving piece driving an operating spring setting a contact on or off by an adjusting spring.
  • a main object of the present invention is to provide a relay wherein the height is made small by placing a coil bobbin and yoke on a header.
  • Another object of the present invention is to provide the electromagnetic relay which can be made any type of one-stable, two-stable and center stable types by adjusting an adjusting spring.
  • FIG. I is a pershective view of an electromagnetic relay of the'present invention as disassembled
  • FIGS. 2A, 2B and 2C shown an assembling order
  • FIG. 3 is a perspective view of the present invention
  • FIG. 4 is a partly sectioned elevation
  • FIG. 5 is a side view
  • FIG. 6 is an operation explaining view
  • FIG. 7 shows other forms of a driving piece and glass balls.
  • FIG. 1 is a perspective view of a relay of the present invention as disassembled.
  • l is a plate called a header, made of a magnetic material and having magnetic pieces 2 and 2' made of a magnetic material provided to project with a spacing between them in the middle of the plate.
  • 3and 3' are lead terminals fixed to the header 1 through respective insulators 4 and arranged in parallel with each other.
  • 5 is an armature made of a magnetic material nd provided with a pivoting hole 6 in the middle of the side.
  • 7 is a Y-shaped driving piece made of iron and having insulating glass balls 8a and 8b fixed at the tips. 7', 8'a and 8'b are respectively the same.
  • 9 is a shaft inserted into the hole 6.
  • l0 and 10' are receiving plates made of an elastic material and having respectively holes 11 and 1] made in the middle.
  • Both ends of the shaft 9 are to be inserted respectively into said holes 11 and ll.
  • 12 is a coil bobbin made of an insulator and having a coil 13 wound around it.
  • 14 is a space provided in the coil bobbin 12.
  • the armature 5 is contained in this space.
  • 15 is a plate-shaped permanent magnet.
  • 16 is a U-shaped yoke. 17a, 17b, 17a and 17'! are L-shaped fixed contacts respectively welded to determined terminals in the lead terminal 3.
  • l8 and 18' are operating springs fixed at the ends respectively to L-shaped supporting arms 19 and 19' which are welded in the lower parts respectively to determined ones of the lead terminals 3'.
  • FIG. 20 is a fixing frame made of a nonmagnetic metallie material and having spring parts 21 and 21' for adjusting the spring system, fixing parts 22 and 22' for fixing the fixing frame 20 to the header 1 and bent parts 20' for holding a permanent magnet provided on both sides.
  • 23 is a case made of a nonmagnetic metallic material.
  • FIG. 7 shows another form of a driving piece to which a plurality of glass balls are fixed so as to beused in the case of setting a plurality of operating springs.
  • FIGS. 2A, 2B and 2C show an assembling order.
  • FIG. 2A shows the header 1 in which the fixed contacts 17a, 17b, "'0 and l7'b are welded to the lead terminals 3.
  • the driving piece 7 is welded to one side of the armature 5 shown in FIG. 1, the shaft 9 is inserted into the hole 6 of the armature 5 and both ends of said shaft 9 are inserted into the holes 11 and l l of the receiving plate 10 and 10'.
  • the armature in this state is inserted into the space 14 in the coil bobbin l2 and the driving piece 7' is welded to the other end of the armature 5.
  • this coil bobbin 12 is fitted into the magnetic pole pieces 2 and 2 of the header 1. This state is shown in FIG. 2.
  • the supporting arms 19 and 19 of the operating springs 18 and 18' are welded to the lead terminals 3'.
  • the permanent magnet 15 is set along the side the side opposite to the fix contacts 17a, 17b, l7'a and l7b of the coil bobbin 12, the yoke 16 is welded to the fixing frame 20 at least near the points at which the adjusting springs 21 and 21' of the fixing frame 20 are branched, is placed above the permanent magnet 15 and coil bobbin l2 and is pressed from above with the fixing frame 20 and the fixing parts 22 and 22' of the fixing frame 20 are welded to the upper surface of the header 1.
  • FIG. 3 In such case, the adjusting spring parts 21 and 21 of the fixing frame 20 are respectively made to press the glass balls 8!) and 8'b above the driving pieces 7 and 7'.
  • adjusting springs 21 and 21' are bent and adjusted to make any of one-stable, two-stable and center stable types.
  • the assembly is vacuum-dried and then thecase 23 is welded to the header 1 in an inert gas atmosphere.
  • the width b of the permanent magnet 15 and the height a of the side 12' of the coil bobbin 12 are made substantially equeal to each other and the sides 16' of the yoke 16 are mounted on the side 12' of the coil bobbin l2.
  • the bent line a represents the spring characteristics of the operating spring
  • b represents the spring characteristics of the adjusting spring
  • 0 represents the spring characteristics of a combination of the operating spring and adjusting spring
  • d represents the energizing attraction
  • 2 represents the opening attraction.
  • the position in which the combined spring force 0 which is a sum of the spring force a of the operating springs 18 and 18' and the spring force b of the adjusting springs 21 and 21 zero the position of the intersection with the abscissa is displaced leftward from the center 0 of the travel X of the driving piece and, at the same time, the combined spring force is so made as to be always between the energizing attraction d and opening attraction e.
  • the distance of the section in which one adjusting spring 21 is in contact with the head part of one glass ball 8'b is made n
  • the distance of the section in which the other adjusting spring 21 is in contact with the head part of the other glass ball 8b is made m
  • the rate of the distance in which the adjusting springs 21 and 21 are in contact respectively with the glass balls 8b and 8'b is varied under a condition that m is larger than n and at the same time the distance Q of the section in which the operating springs 18 and 18' are not in contact respectively with the glass balls 8a and 8b and 8'a and 8'b is varied to make a coordination.
  • auxiliary adjusting springs may be provided beside the adjusting springs 21 and 21' so that a coordination may be made in response to the fluctuation of the attraction curve of the electromagnet.
  • the spring forces can be easily adjusted from both side parts of the electromagnetic relay so that the efficiency of the electromagnet may be very high, the portion in which the combined spring force is zero may be displaced from the center of the driving piece travel and the combined spring force may be between the energizing attraction and opening attraction. Therefore, a balanced armature type polar relay making a one-stable operation is obtained.
  • an electromagnetic relay in which a high sensitivity one-stable operation is easlly obtained by applying a simple operation.
  • two-stable type and center-stable type electromagnetic relays can be easily realized by the manner of bringing the adjusting springs into contact with the glass balls.
  • An electromagnetic relay comprising a header formed of a magnetic material and having magnetic pole pieces projecting with a spacing between them substantially in the middle part, a coil bobbin arranged on the above mentioned header and bearing an armature rotatably in a space within it, an exciting coil wound on the above mentioned coil bobbin, a yoke arranged around the upper part of the above mentioned coil bobbin, made of a magnetic material and opposed to the magnetic pole pieces projecting from the above mentioned header, a permanent magnet arranged between the above mentioned yoke and header, an operating spring interposed between the branched free ends of a driving piece fixed to each end of the above mentioned armature and operated by the driving piece to be opened and closed with a fixed contact, a fixing frame fixed in the bottom part of the above mentioned header and fixing the yoke, coil bobbin and permanent magnet and an adjusting spring extended from each side of the above mentioned fixing frame and having the free end arranged to press each driving piece.
  • An electromagnetic relay according to claim 1 wherein the height of the permanent magnet arranged on the side of the coil bobbin and the height of the side of the coil bobbin are equal to each other and the side of the yoke is arranged on the side of the fixing frame.
  • An electromagnetic relay according to claim 4 wherein a glass ball is fixed to each branched tip of the driving piece.
  • An electromagnetic relay according to claim 4 wherein a plurality of glass balls are fixed to the two branched tips of the driving piece so as to operate a plurality of operating springs.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
US00283732A 1971-09-30 1972-08-25 Flat type balanced armature relay Expired - Lifetime US3748607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46076734A JPS5229419B2 (enrdf_load_stackoverflow) 1971-09-30 1971-09-30

Publications (1)

Publication Number Publication Date
US3748607A true US3748607A (en) 1973-07-24

Family

ID=13613800

Family Applications (1)

Application Number Title Priority Date Filing Date
US00283732A Expired - Lifetime US3748607A (en) 1971-09-30 1972-08-25 Flat type balanced armature relay

Country Status (6)

Country Link
US (1) US3748607A (enrdf_load_stackoverflow)
JP (1) JPS5229419B2 (enrdf_load_stackoverflow)
CA (1) CA959522A (enrdf_load_stackoverflow)
FR (1) FR2154480B1 (enrdf_load_stackoverflow)
GB (1) GB1368898A (enrdf_load_stackoverflow)
IT (1) IT961942B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946347A (en) * 1973-04-13 1976-03-23 Matsushita Electric Works Ltd. Electromagnetic relay structure
US3993971A (en) * 1974-05-15 1976-11-23 Matsushita Electric Works, Ltd. Electromagnetic relay
JPS52112755A (en) * 1976-03-18 1977-09-21 Matsushita Electric Works Ltd Electromagnetic relay

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2344365C3 (de) * 1973-09-03 1983-06-01 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Elektromagnetisches Relais mit Lichtbogenblasung
JPS5095758A (enrdf_load_stackoverflow) * 1973-12-26 1975-07-30
JPS5422807B2 (enrdf_load_stackoverflow) * 1973-12-26 1979-08-09
JPS5444187Y2 (enrdf_load_stackoverflow) * 1973-12-26 1979-12-19
JPS51107287A (ja) * 1975-03-18 1976-09-22 Fujikoshi Kk Koshitsuhimakukeiseisochi
JPS53155U (enrdf_load_stackoverflow) * 1976-06-21 1978-01-05
JPS5996262A (ja) * 1982-11-24 1984-06-02 Tokuda Seisakusho Ltd 真空蒸着装置用治具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258556A (en) * 1963-05-13 1966-06-28 Babcock Electronics Corp Electromagnetic actuator and relay comprising same
US3307127A (en) * 1965-10-22 1967-02-28 Nick F Leo Subminiature snap action relay
US3368170A (en) * 1965-03-04 1968-02-06 Matsushita Electric Works Ltd Polarized electromagnetic relay
US3705368A (en) * 1971-07-23 1972-12-05 Westinghouse Air Brake Co Microminiature relay

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258556A (en) * 1963-05-13 1966-06-28 Babcock Electronics Corp Electromagnetic actuator and relay comprising same
US3368170A (en) * 1965-03-04 1968-02-06 Matsushita Electric Works Ltd Polarized electromagnetic relay
US3307127A (en) * 1965-10-22 1967-02-28 Nick F Leo Subminiature snap action relay
US3705368A (en) * 1971-07-23 1972-12-05 Westinghouse Air Brake Co Microminiature relay

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946347A (en) * 1973-04-13 1976-03-23 Matsushita Electric Works Ltd. Electromagnetic relay structure
US3993971A (en) * 1974-05-15 1976-11-23 Matsushita Electric Works, Ltd. Electromagnetic relay
JPS52112755A (en) * 1976-03-18 1977-09-21 Matsushita Electric Works Ltd Electromagnetic relay

Also Published As

Publication number Publication date
JPS4842352A (enrdf_load_stackoverflow) 1973-06-20
FR2154480A1 (enrdf_load_stackoverflow) 1973-05-11
GB1368898A (en) 1974-10-02
JPS5229419B2 (enrdf_load_stackoverflow) 1977-08-02
IT961942B (it) 1973-12-10
CA959522A (en) 1974-12-17
FR2154480B1 (enrdf_load_stackoverflow) 1977-11-18

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